CALIFORNIA'S MOTION PICTURE HOSPITAL GOES "GREEN" WITH ALTERNATIVE ENERGY SYSTEMS FROM TECOGEN Tecogen's Cogeneration Modules Save Money and Reduce "Greenhouse Gas" Emissions WALTHAM, Mass., August 28, 2002 - Tecogen Inc. announced today that it has received an order for six of its natural gas-driven cogeneration modules from the Motion Picture & Television Fund Hospital in California. These cogeneration modules will complement a TECOCHILL® natural gas-driven cooling system by Tecogen that was shipped earlier this summer. "We demonstrated that we can supply technology with three significant benefits for the hospital," said Bob Panora, president of Tecogen. "First, we can substantially increase their energy efficiency, which will allow them to reduce their energy costs. Second, our systems will be easy to permit, since emissions fall well below even the strictest levels in the Los Angeles area. And third, our systems will cut CO2 emissions nearly in half, compared with what would be produced by generating a comparable amount of energy conventionally." Carbon dioxide (CO2) is one of the primary "greenhouse gases" scientists believe is responsible for global warming. With the Tecogen units in place, the hospital will produce 4.5 million fewer pounds of CO2 per year -- a 46 percent reduction from what their energy use now represents. "Working with Tecogen is a win-win," said Seth Ellis, vice president and chief operating officer for the Motion Picture & Television Fund. "Our organization, which was founded more than 80 years ago, has always worked hard to be a good neighbor and corporate citizen. We are very pleased to implement this technology that will not only prove cost efficient but will do something good for the environment, as well." Tecogen's equipment, which yields better than 80% total energy efficiency, significantly reduces the hospital's energy costs. Each on-site cogeneration module contains an engine that burns natural gas to power a generator, which in turn produces electricity for the facility. Exhaust heat is recovered to provide hot water, thereby eliminating the need for the gas that is now burned in the hospital's boilers. A major portion of the recovered heat is used to power absorption-type cooling units (air-conditioners), which further reduces the hospital's overall electricity demand during the summer months. The technology is exceptionally clean and non-polluting; state-of-the-art emissions controls have allowed Tecogen to meet even the most stringent air quality requirements in the U.S., including the Best Available Control Technology (BACT) standards established by the South Coast Air Quality Management District (SCAQMD) in California. About Tecogen Tecogen Inc. operates in the distributed generation market and is a leading manufacturer of natural gas-fueled commercial and industrial cooling and cogeneration systems. Tecogen has an installed base of more than 1,200 units, which it supports through an established network of engineering, sales, and service support. Formerly a public subsidiary of Thermo Electron Corporation, the company is now privately held. Tecogen is based in Waltham, Massachusetts, with annual revenues of approximately $13 million. For more information, go to www.tecogen.com. About The Motion Picture & Television Fund Hospital The Motion Picture & Television Fund Hospital was created exclusively to serve the needs of entertainment industry professionals and their families. Located in Woodland Hills, California, the facility's broad range of services includes hospital care, surgical services, diagnostic services, respiratory care, and transitional and follow-up care. The hospital is part of The Motion Picture & Television Fund, a comprehensive service organization that operates five outpatient health centers throughout the greater Los Angeles area; a fully licensed, 256-bed acute-care hospital; a children's center; a retirement community; health plans; and more. For more information, visit www.mptvfund.org.